Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province

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Detailed study of Callovian carbonates of the Calabozo Formation (30 m) in western Argentina, reveals the abundance of benthic carbonates particles produced by organisms that are light dependent, and non-skeletal grains such as ooids and peloids. The biota consists of bivalves, dasyclads (Salpingopo...

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Autores principales: Palma, R.M., Mehdli, M., Bressan, G.S., Kietzmann, D.A.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2007
Materias:
Carbonate ramp
Diagenesis
Jurassic
Microfacies
Photozoan Association
biota
bivalve
Callovian
carbonate ramp
cement
diagenesis
echinoderm
gastropod
microfacies
paleoenvironment
petrography
subtropical region
Argentina
Neuquen Basin
South America
Anthozoa
Bivalvia
Bryozoa
Cyanobacteria
Cylindroporella
Echinodermata
Foraminifera
Gastropoda
Ostracoda
Rivularia (cyanobacterium)
Scleractinia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v62_n2_p_Palma
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_00044822_v62_n2_p_Palma
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spelling paperaa:paper_00044822_v62_n2_p_Palma2023-06-12T16:40:11Z Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province Rev. Asoc. Geol. Argent. 2007;62(2) Palma, R.M. Mehdli, M. Bressan, G.S. Kietzmann, D.A. Carbonate ramp Diagenesis Jurassic Microfacies Photozoan Association biota bivalve Callovian carbonate ramp cement diagenesis echinoderm gastropod microfacies paleoenvironment petrography subtropical region Argentina Neuquen Basin South America Anthozoa Bivalvia Bryozoa Cyanobacteria Cylindroporella Echinodermata Foraminifera Gastropoda Ostracoda Rivularia (cyanobacterium) Scleractinia Detailed study of Callovian carbonates of the Calabozo Formation (30 m) in western Argentina, reveals the abundance of benthic carbonates particles produced by organisms that are light dependent, and non-skeletal grains such as ooids and peloids. The biota consists of bivalves, dasyclads (Salpingoporella annulata Carozzi, Cylindroporella annulata Carozzi, and Heteroporella sp.), scleractinian corals, echinoderms, cyanobacteria (Cayeuxia (Rivularia) piae Rech-Frollo, and Cayeuxia (Rivularia) kurdistanensis Elliot), oncoids, gastropods, forams, and calcispheres as well as ostracods, and bryozoans in relatively minor quantities. Allochemical particles suggest for the shallow marine limestones of the Calabozo Formation a Photozoan Association under subtropical seawater conditions. The petrographic features allow to recognize seven microfacies, differentiated by particle types, fossils and depositional texture: 1) criptalgal bindstone; 2) bioclastic-peloidal wackestone; 3) bioclastic-intraclastic wackestone; 4) bioclastic-peloidal-terrigenous wackestone, 5) coral framestone, 6) peloidal-bioclastic-intraclastic packstone, and 7) oolitic-bioclastic-peloidal packstone-grainstone. The recognition of microfacies groups constitute two palaeoenvironmental associations: inner ramp and middle ramp settings. Diagenetic studies are based on examination of stained thin sections, through conventional petrography and under cathodoluminescence. Early diagenetic processes are micritization and precipitation of peloidal micrite and acicular calcite. These cements predate granular and syntaxial calcite cements. Cathodoluminescent petrography allows to identify three morphologic types of clear cements: (1) fine acicular crystals, (2) granular cements, and (3) syntaxial cement rims on echinoderm particles. Description of the CL signature has evolved to discrimination as either, non-luminescent, dully luminescent red/orange, or brightly luminescent yellow. The earlier acicular calcite cement is non-luminescent, on the other hand, the predominantly dully luminescent red/orange, or brightly luminescent yellow of interparticular and intraparticular granular calcite and syntaxial cements indicate a shallow burial meteoric-phreatic diagenetic environment. Fil:Palma, R.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bressan, G.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Kietzmann, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v62_n2_p_Palma
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Carbonate ramp
Diagenesis
Jurassic
Microfacies
Photozoan Association
biota
bivalve
Callovian
carbonate ramp
cement
diagenesis
echinoderm
gastropod
microfacies
paleoenvironment
petrography
subtropical region
Argentina
Neuquen Basin
South America
Anthozoa
Bivalvia
Bryozoa
Cyanobacteria
Cylindroporella
Echinodermata
Foraminifera
Gastropoda
Ostracoda
Rivularia (cyanobacterium)
Scleractinia
spellingShingle Carbonate ramp
Diagenesis
Jurassic
Microfacies
Photozoan Association
biota
bivalve
Callovian
carbonate ramp
cement
diagenesis
echinoderm
gastropod
microfacies
paleoenvironment
petrography
subtropical region
Argentina
Neuquen Basin
South America
Anthozoa
Bivalvia
Bryozoa
Cyanobacteria
Cylindroporella
Echinodermata
Foraminifera
Gastropoda
Ostracoda
Rivularia (cyanobacterium)
Scleractinia
Palma, R.M.
Mehdli, M.
Bressan, G.S.
Kietzmann, D.A.
Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
topic_facet Carbonate ramp
Diagenesis
Jurassic
Microfacies
Photozoan Association
biota
bivalve
Callovian
carbonate ramp
cement
diagenesis
echinoderm
gastropod
microfacies
paleoenvironment
petrography
subtropical region
Argentina
Neuquen Basin
South America
Anthozoa
Bivalvia
Bryozoa
Cyanobacteria
Cylindroporella
Echinodermata
Foraminifera
Gastropoda
Ostracoda
Rivularia (cyanobacterium)
Scleractinia
description Detailed study of Callovian carbonates of the Calabozo Formation (30 m) in western Argentina, reveals the abundance of benthic carbonates particles produced by organisms that are light dependent, and non-skeletal grains such as ooids and peloids. The biota consists of bivalves, dasyclads (Salpingoporella annulata Carozzi, Cylindroporella annulata Carozzi, and Heteroporella sp.), scleractinian corals, echinoderms, cyanobacteria (Cayeuxia (Rivularia) piae Rech-Frollo, and Cayeuxia (Rivularia) kurdistanensis Elliot), oncoids, gastropods, forams, and calcispheres as well as ostracods, and bryozoans in relatively minor quantities. Allochemical particles suggest for the shallow marine limestones of the Calabozo Formation a Photozoan Association under subtropical seawater conditions. The petrographic features allow to recognize seven microfacies, differentiated by particle types, fossils and depositional texture: 1) criptalgal bindstone; 2) bioclastic-peloidal wackestone; 3) bioclastic-intraclastic wackestone; 4) bioclastic-peloidal-terrigenous wackestone, 5) coral framestone, 6) peloidal-bioclastic-intraclastic packstone, and 7) oolitic-bioclastic-peloidal packstone-grainstone. The recognition of microfacies groups constitute two palaeoenvironmental associations: inner ramp and middle ramp settings. Diagenetic studies are based on examination of stained thin sections, through conventional petrography and under cathodoluminescence. Early diagenetic processes are micritization and precipitation of peloidal micrite and acicular calcite. These cements predate granular and syntaxial calcite cements. Cathodoluminescent petrography allows to identify three morphologic types of clear cements: (1) fine acicular crystals, (2) granular cements, and (3) syntaxial cement rims on echinoderm particles. Description of the CL signature has evolved to discrimination as either, non-luminescent, dully luminescent red/orange, or brightly luminescent yellow. The earlier acicular calcite cement is non-luminescent, on the other hand, the predominantly dully luminescent red/orange, or brightly luminescent yellow of interparticular and intraparticular granular calcite and syntaxial cements indicate a shallow burial meteoric-phreatic diagenetic environment.
format Artículo
Artículo
publishedVersion
author Palma, R.M.
Mehdli, M.
Bressan, G.S.
Kietzmann, D.A.
author_facet Palma, R.M.
Mehdli, M.
Bressan, G.S.
Kietzmann, D.A.
author_sort Palma, R.M.
title Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
title_short Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
title_full Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
title_fullStr Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
title_full_unstemmed Subtropical carbonates from the Callovian Calabozo Formation, and their diagenesis, Neuquen Basin, Mendoza province
title_sort subtropical carbonates from the callovian calabozo formation, and their diagenesis, neuquen basin, mendoza province
publishDate 2007
url http://hdl.handle.net/20.500.12110/paper_00044822_v62_n2_p_Palma
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AT bressangs subtropicalcarbonatesfromthecalloviancalabozoformationandtheirdiagenesisneuquenbasinmendozaprovince
AT kietzmannda subtropicalcarbonatesfromthecalloviancalabozoformationandtheirdiagenesisneuquenbasinmendozaprovince
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